а) 8/18-8/27 = 4/9-8/27 = 12/27-8/27 = 4/27
б) 7/16-5/24 = 21/48-10/48 = 11/48
в) 2/11-1/12 = 24/132-11/132 = 13/132
а) 8/18-8/27 = 4/9-8/27 = 12/27-8/27 = 4/27
б) 7/16-5/24 = 21/48-10/48 = 11/48
в) 2/11-1/12 = 24/132-11/132 = 13/132